Date: 25 November 2004
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AUSCERT External Security Bulletin Redistribution
ESB-2004.0738 -- Debian Security Advisory DSA 595-1
New bnc packages fix arbitrary code execution
25 November 2004
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AusCERT Security Bulletin Summary
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Product: bnc
Publisher: Debian
Operating System: Debian GNU/Linux 3.0
Linux variants
Impact: Execute Arbitrary Code/Commands
Access: Remote/Unauthenticated
CVE Names: CAN-2004-1052
Original Bulletin: http://www.debian.org/security/2004/dsa-595
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Debian Security Advisory DSA 595-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
November 24th, 2004 http://www.debian.org/security/faq
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Package : bnc
Vulnerability : buffer overflow
Problem-Type : remote
Debian-specific: no
CVE ID : CAN-2004-1052
Leon Juranic discovered that BNC, an IRC session bouncing proxy, does
not always protect buffers from being overwritten. This could
exploited by a malicious IRC server to overflow a buffer of limited
size and execute arbitrary code on the client host.
For the stable distribution (woody) this problem has been fixed in
version 2.6.4-3.3.
This package does not exist in the testing or unstable distributions.
We recommend that you upgrade your bnc package.
Upgrade Instructions
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wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.
If you are using the apt-get package manager, use the line for
sources.list as given below:
apt-get update
will update the internal database
apt-get upgrade
will install corrected packages
You may use an automated update by adding the resources from the
footer to the proper configuration.
Debian GNU/Linux 3.0 alias woody
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Source archives:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3.dsc
Size/MD5 checksum: 543 a1450f3cf6b80026ec903f15f6585ae8
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3.diff.gz
Size/MD5 checksum: 3062 64db73a4d5fb93cd8d039ba13eb4b3dc
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4.orig.tar.gz
Size/MD5 checksum: 44333 1767b5bfdfd1c7a4a51a4114a326d014
Alpha architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_alpha.deb
Size/MD5 checksum: 30828 e8dd80226ae437e1f3d9bbcb694467a7
ARM architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_arm.deb
Size/MD5 checksum: 26770 c0ee6446147dc99465cebd1bda6dda60
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_i386.deb
Size/MD5 checksum: 26266 c98bb8052220d7c869fd691059cc4b33
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_ia64.deb
Size/MD5 checksum: 36164 d7ae31f108e9b82678c06695f241e046
HP Precision architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_hppa.deb
Size/MD5 checksum: 29878 53cb733232eff24419c98ce67d45d056
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_m68k.deb
Size/MD5 checksum: 25844 d6298a6dd44eae95a2a84d38f0bc09d1
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_mips.deb
Size/MD5 checksum: 29236 bd291995072ad9e3172c4f2683412e7c
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_mipsel.deb
Size/MD5 checksum: 29262 fd73461c1b0e65fa78424fc3f9b9631b
PowerPC architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_powerpc.deb
Size/MD5 checksum: 27718 4058b8b6d4bb98614941f6587e6f8f94
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_s390.deb
Size/MD5 checksum: 27232 99d2ddd170aa5b8425b9c2a0c5d74b2a
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/b/bnc/bnc_2.6.4-3.3_sparc.deb
Size/MD5 checksum: 29906 4276473db008684a75644ce7512d9a59
These files will probably be moved into the stable distribution on
its next update.
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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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